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  • Title: Maximum vs. mono androgen blockade and the risk of recurrence in men with localized prostate cancer undergoing brachytherapy.
    Author: Chen RC, Sadetsky N, Chen MH, Carroll PR, D'Amico AV.
    Journal: Int J Radiat Oncol Biol Phys; 2009 Sep 01; 75(1):36-9. PubMed ID: 19233568.
    Abstract:
    PURPOSE: We examined whether maximum androgen blockade (MAB) is associated with a decreased recurrence risk vs. single-agent androgen suppression (monotherapy) for men undergoing brachytherapy (BT) for localized prostate cancer. METHODS AND MATERIALS: Data from 223 men in the Cancer of the Prostate Strategic Urologic Research Endeavor database who received androgen deprivation therapy (ADT) concurrent with BT for intermediate- or high-risk prostatic adenocarcinoma were included; 159 (71%) received MAB, and 64 (29%) monotherapy (luteinizing hormone-releasing hormone agonist or anti-androgen alone). Cox regression analysis was performed to assess whether the choice of ADT was associated with disease recurrence adjusting for known prognostic factors. RESULTS: Men who received MAB had similar Gleason scores, T categories, and pretreatment prostate-specific antigen as those who received monotherapy. After a median follow-up of 49 months, the use of MAB was not associated with a decrease in the risk recurrence (p = 0.72), after adjusting for known prognostic factors. A higher PSA at diagnosis (p = 0.03) and younger age at diagnosis (p < 0.01) were associated with increased recurrence risk. The 3-year recurrence free survival was 76% for patients in both monotherapy and MAB groups. CONCLUSIONS: There are varied practice patterns in physicians' choice of the extent of concurrent ADT when used with brachytherapy for men with intermediate- or high-risk prostate cancer. Given a lack of demonstrated superiority from either ADT choice, both appear to be reasonable options.
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